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Educational researchers randomly assigned 28 ninth-year students in Australia to receive coordinate geometry training in one of two ways: a conventional way and a modified way. After the training, the students were asked to solve a coordinate geometry problem. The time to complete the problem was recorded, but five students in the “conventional” group did not complete the solution in the five minute alloted time.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: case0402
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ex2118
(Package: Sleuth2) :
HIV and Circumcision
Researchers in Kenya identified a cohort of more that 1,000 prostitutes who were known to be a major reservoir of sexually transmitted diseases in 1985. It was determined that more than 85% of them were infected with human immunodeficiency virus (HIV) in February, 1986. The researchers identified men who acquired a sexually-transmitted disease from this group of women after the men sought treatment at a free clinic. The data frame contains data on the subset of those men who did not test positive for HIV on their first visit and who agreed to participate in the study. The men are categorised according to whether they later tested positive for HIV during the study period, whether they had one or multiple sexual contacts with the prostitutes and whether they were circumcised.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex2118
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ex2011
(Package: Sleuth2) :
Space Shuttle
This data frame contains the launch temperatures (degrees Fahrenheit) and an indicator of O-ring failures for 24 space shuttle launches prior to the space shuttle Challenger disaster of January 28, 1986.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex2011
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ex2015
(Package: Sleuth2) :
Spotted Owl Habitat
A study examined the association between nesting locations of the Northern Spotted Owl and availability of mature forests. Wildlife biologists identified 30 nest sites. The researchers selected 30 other sites at random coordinates in the same forest. On the basis of aerial photographs, the percentage of mature forest (older than 80 years) was measured in various rings around each of the 60 sites.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex2015
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ex0221
(Package: Sleuth2) :
Bumpus's Data on Natural Selection (Weight)
As evidence in support of natural selection, Bumpus presented measurements on house sparrows brought to the Anatomical Laboratory of Brown University after an uncommonly severe winter storm. Some of these birds had survived and some had perished. Bumpus asked whether those that perished did so because they lacked physical characteristics enabling them to withstand the intensity of that particular instance of selective elimination. The data are on the the weights, in grams, for the 24 adult male sparrows that perished and for the 35 adult males that survived.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex0221
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ex0918
(Package: Sleuth2) :
Speed of Evolution
Researchers studied the development of a fly (Drosophila subobscura) that had been accidentally introduced from the Old World into North America around 1980.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex0918
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ex0222
(Package: Sleuth2) :
Cholesterol in Urban and Rural Guatemalans
This data comes from an observational study to contrast cholesterol levels in rural and urban Guatemalan Indians
● Data Source:
CranContrib
● Keywords: datasets
● Alias: ex0222
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case2102
(Package: Sleuth2) :
Moth Coloration and Natural Selection
This data was collected by J.A. Bishop. Bishop selected seven locations progressively farther from Liverpool. At each location, Bishop chose eight trees at random. Equal number of dead (frozen) light (Typicals) and dark (Carbonaria) moths were glued to the trunks in lifelike positions. After 24 hours, a count was taken of the numbers of each morph that had been removed—presumably by predators.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: case2102
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case1401
(Package: Sleuth2) :
Chimp Learning Times
Researchers taught each of 4 chimps to learn 10 words in American sign language and recorded the learning time for each word for each chimp. They wished to describe chimp differences and word differences.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: case1401
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case2001
(Package: Sleuth2) :
Survival in the Donner Party
This data frame contains the ages and sexes of the adult (over 15 years) survivors and nonsurvivors of the Donner party.
● Data Source:
CranContrib
● Keywords: datasets
● Alias: case2001
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